NSK NU308EM
Single-Row Cylindrical Roller Bearings
(BRAND)：NSK
(Availability)：In Stock
Designations
NU308EM
Boundary Dimensions
d
40
mm
Bore diameter
D
90
mm
Outside diameter
B
23
mm
Width
FW
52
mm
Raceway diameter of inner ring
r (min.)
1.5
mm
Chamfer dimension
r1 (min.)
1.5
mm
Chamfer dimension
Basic Load Ratings
Cr
102000
N
Basic dynamic load rating
C0r
81500
N
Basic static load rating
Speeds
Thermal Speed Rating (Oil-bath)
7500
min-1
Oil-bath lubrication subject to conditions outlined in ISO 15312
Mechanical (forced-circulation oil)
14000
min-1
Properly designed and controlled forced-circulation oil lubrication
Grease
6700
min-1
Grease lubrication
Oil (Oil-bath)
8000
min-1
Oil-bath lubrication
db (min.)
48
mm
Diameter of shaft / spacer sleeve abutment
db (max.)
50
mm
Diameter of shaft / spacer sleeve abutment
dc (min.)
55
mm
Diameter of shaft abutment
Da (max.)
82
mm
Diameter of housing abutment
ra (max.)
1.5
mm
Radius of shaft or housing fillet
rb (max.)
1.5
mm
Radius of shaft or housing fillet
Abutment and Fillet Dimensions
Mass approx.
0.744
kg
Mass approx.
